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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Steel and Composite Structures, An International Journal Steel and Composite Structures, An International Journal Vol.40 No.1
- 발행연도
- 2021.1
- 수록면
- 75 - 85 (11page)
이용수
초록· 키워드
오류제보하기
A fiber-reinforced polymer (FRP)-confined concrete core that provides high strength and ductility under axial compression can act as strength enhancement in a hybrid column. In the present study, ordinary concrete was replaced with ultra-high-performance concrete (UHPC) to form an FRP-confined UHPC core (FCUC). The FCUC was embedded in square concrete-filled steel tube (CFST) columns to form a high-performance hybrid column (SCF-UHPC column for short). The axial compressive behavior of the SCF-UHPC was experimentally investigated using 12 SCF-UHPC columns and two ordinary CFST columns for comparison. The advantages of the SCF-UHPC include excellent axial load-bearing capacity, good ductility, and stable residual load-bearing capacity. The results show that failure of an SCF-UHPC column was caused by FRP rupture of FCUC, which occurred after steel tube buckling that results in the degraded stiffness. It was also shown that the load-displacement behavior of the SCF-UHPC composite column was determined by the UHPC core diameter and the corresponding confinement provided by the outer steel tube and inner FRP jacket. A hardening effect could be achieved when the confinement demand of the UHPC core was satisfied, whereas a plateau effect appeared if the confinement was insufficient. Furthermore, the load-bearing capacity and ductility of the SCF-UHPC columns improved with increased thickness of the steel tube and the FRP.
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참고문헌 (29)
참고문헌 신청
Shi Cheng / 2016 / Load-Strain Model for Steel-Concrete-FRP-Concrete Columns in Axial Compression / Journal of Composites for Construction 20(5):04016017
Peng Feng / 2015 / Mechanical behavior of concrete-filled square steel tube with FRP-confined concrete core subjected to axial compression / Composite Structures 123:312~324
Tohid Ghanbari Ghazijahani / 2015 / Rectangular steel tubes with timber infill and CFRP confinement under compression: Experiments / Journal of Constructional Steel Research 114:196~203
Tohid Ghanbari Ghazijahani / 2015 / Timber filled CFRP jacketed circular steel tubes under axial compression / Construction and Building Materials 94:791~799
Aliakbar Gholampour / 2018 / Behavior of steel fiber-reinforced concrete-filled FRP tube columns: Experimental results and a finite element model / Composite Structures 194:252~262
Peng Feng / 2015 / Mechanical behavior of concrete-filled square steel tube with FRP-confined concrete core subjected to axial compression / Composite Structures 123:312~324
Tohid Ghanbari Ghazijahani / 2015 / Rectangular steel tubes with timber infill and CFRP confinement under compression: Experiments / Journal of Constructional Steel Research 114:196~203
Tohid Ghanbari Ghazijahani / 2015 / Timber filled CFRP jacketed circular steel tubes under axial compression / Construction and Building Materials 94:791~799
Aliakbar Gholampour / 2018 / Behavior of steel fiber-reinforced concrete-filled FRP tube columns: Experimental results and a finite element model / Composite Structures 194:252~262
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